Watch.



C. L. DEPULLIER.

WATCH.

APPLICATION FILED FEB.1. I9I9.

1,322,547. Patented Nov. 25, 1919.

l/V VEN TUI? sans CHARLES L. DEPLLIER, @E BRKLYN, NEW YORK.

WATCH.

Specification of Letters latent.

latented Nov. 25, 1919 Application led February l, w19. Serial No. 274,44@

. vented certain new and useful improvekthereloy into the watch movement.

ments in Watches, of which the following is a specification, reference being had to the accompanying drawing, forming a part hereof.

The greatly increased use, during the war,

Vof watches with luminous dials has disbe retained without the disadvantage of the loss of accuracy due to the causejust stated. It is therefore the object of this invention to provide means whereby the advantage of the self-illuminated dial shalll be retained without permitting the dustv from the disintegrated material to penetrate the movement. ln accordance with the invention the problem is solved by providing the watch with a double crystal and applying the .luminous material to the proximate face of one of the two crystals so that the luminous material is at all times completely. inclosed between the two crystals and the particles thereof cannot nd their way into the movement, while at the same time the desired luminosity is retained. VThe invention will be more fully explained hereinafter, with reference to the accompanying drawing in which itis `illustrated, and in which- Figure 1 is a face view of a watch with the bezel and crystals removed.

Fig. 2 is a view in section of the watch shown in Fig. l, but on a larger scale, the movement being omitted.

F ig. 8 is a face view of the inner crystal shown in Fig. 2. f

Fig. a is a view similar to Fig. 2 but showing a modification.

The watch case may be constructed of any suitable material and in any suitable manner except so far as is necessary to permit two crystals to be secured in place over the ordinary dial.. ln the watch shown in the drawings thecenter a supports the usual dial b and the hands c. lt is provided, at a, with a seat for the reception of an inner crystal d which is shown as secured in a metal ring d. The center a also receives a bezel c which is shown as threaded upon the center, and in the bezel e is seated in the usual manner an outer crystal f. The dial b has marked thereon, in usual manner and preferably in dull black, the usual i'igures,

as at o. Upon that surface of one of the two crystals d, f which is proximate to the other crystal, are formed of luminous material corresponding iigures (i2.

lt is obvious that the crystals may be variously secured in place and that the iigures of luminous material might be formed upon either crystal. ln the modication shown in F ig. l the inner crystal d3 is seated in the bezel e, as at C24', while the outer crystal f is seateddn the bezel in the same manner as shown in Fig. The figures f of luminous material in this instance, however, are formed on the inner `face of the outer crysta f.

lt will loe noted that the luminous material which forms the figures is completely inclosed between the two crystals and that, nov matter how much the materialmay become disintegrated in the course of time, the particles thereof cannot work their way into the movement of the watch. At the same time the self-illuminated quality of the watch is retained. The figures formed of the luminous material are themselves visible in the dark and they serve also to illuminate the dial o and the tlgures 2) thereon. The

Watch therefore retains the desired luminous quality While it is not liable to lose accuracy by reason of the penetration of particles of the luminous material into the movement of 5 the Watch.

I' claim as my invention: L A Watch having' two crystals, one outside the other, and luminous material applied. to the proximate face of one of the 10- crystalsu maaar? 2. A watch having two crystals, one outside the other, and having figures formed of luminous material on the proximate face of one of the' two crystals, the luminous material being thereby inclosed in the space be tween the two crystals.,

This specification signed this 27th day of January, A.. D. 1919.

CHAR-LES L, DEPOLLIER. 

